XA-A12
Slide Base Assembly
SAF-Holland

This slide base assembly is a key element of the adjustable coupling platform, providing a proven foundation for the moving slider portion of the fifth wheel system. It is designed to bear concentrated loads from towing operations, while supporting smooth carriage travel along the rail path when adjusting to accommodate various trailer lengths and weight distributions. A robust base contributes to accurate centering of the kingpin, reduces lateral play, and helps preserve the lifecycle of the slider, rails, and locking mechanisms. VMRS classification 059-001-045 identifies its role within the slide base family, with the category context reflecting its integration in adjustable, fifth wheel compatible setups. The unit is intended for use with compatible mounting frames and standard hardware found in most heavy-duty fleets. As with all critical coupling components, follow OEM guidelines for installation torque and inspection intervals to ensure continued safety and reliable performance in day-to-day operations.